Combined dynamo-magneto ignition device.



PATENTED JAN. 15, 1907 A. STRUTHEBS. COMBINED DYNAMOMAGNETO IGNITIONDEVICE.

APPLICATION FILED AUG. 10, 1906.

2 SHEETSSHEET l I Ill .s

No 841,599. PATENTED JAN 15, 1907 J. A. I'TRUTHERS. COMBINEDDYNAMOMAGNETO IGNITION DEVICE. APPLICATION FILED AUG.10, 1906v 2SHEETS-SHEET W'Me STATES PATENT, OFFICE;

Joshua. a. srnurnnns. .or YOUNGSTOWN, onto, AssicNoR or THIRTY- I FOUR.enneunnnnorns To W. a. BEARD, 'SEVENTEEN ONE-HUN- "DREDTHS:;TO 9J;iEDWARD PARKER; AND TWENTY-noun AND FIVE- mar-1,593

To a l/- 'IUhOH'b. z t-'ma/y concern.-

siding at Youngstown, in the county of Ma honingandTStateot Ohio,havenvented certain new and useful improvements in CombmedDynamo-Magneto Ignition Devices,- of which the'xfo'llowing- 1S aspecification,- referencev being had therein to the ac to .conipanying'drawings. r This invention relates to a combined dynamo-i'nagnetoignition device, the object being to provide a machine of this characteradapted for; use with an explosive-engine to be 1 driven bythe engineand designed to generate a current o electricity-to produce therequiredspark fo rigniting the explosive agent of the engine"; I

A further object of the invention is to pro vide a continuous orconstant current, the voltage being automatically regulated by anelectrical governor to prevent the supply to the sparker-conductors of acurrent of such high potential as would burn out the ignit'er or itsconductors,

The invention comprises a generator consisting of permanentmagnets,'fi'eld-coils, an armature,'and brushes contacting with thecommutator on the-armature-shatt, in com- 3o bination with an electricgovernor for cutting the field coils out of circuit autoniatim ally whenthe speed of the engine and the resultant revolution of the armature areso'increased or accelerated as to generate a current or greater voltagethan is required to effect the ignition.

The dynamo employed is of the shunt wound type, the current from thearmature, brushes being shunted through the field- 4 coils in its pathto the electric governor, and the electrical connections being sodisposed that the strength of the current passing through the engineleads or conductors will remain substantially constant, excess cm- 5rent being avoided by cutting the field-coils out of circuit when thespeed of the armature is accelerated to such a degree as to produce acurrent of greater strength than is required to produce theignition-spark.

The construction of the improvement will befully described hereinafterin connection I Specification of Letters Patent;

formed in an angle-plate 22,

enn-n upfnennrns TO F7: DUCHANOIS, 0F YOUNGSTOWN,

obi-8mm: DYNAMQ-MAGN-ETQ IGNITION ozv 'ca.

Patented-Tan, 15, 1907. I

- ApplicatiunfiledAugi st10,1906. seii'aino seaosa.

g with the, accompanying drawings, which Be it knownythat 1, Joshua A.SZTRUFIHERS, a cit zen of-the United States of America, re'

form apart of this specification, and its novel features will-be definedin the-appended claims. 1 j,

In the drawings, Figure 1 is a side elevation of a machine embodying theinvention. r Fig.

2 is a bottom planview of the same, showing the electric governor orcut-out. Fig. 3 is a detail of a portion of the governor. Fig. 4 is afront end elevation of the machine, and Fig. 5 is a transverse verticalsection of the same. .1 The reference-numeral 1 designates thearmature-shaft, upon which is mounted a friction-wheel 2, adapted to runin contact with a driving wheel of an explosive-engine.

The generator comprises a pluralityof permanent magnets 3, withfield-coils 4 and an armature 5, mounted upon the shaft 1.

' The current from one of the usual commutator-brushes passesfrorn abinding-post 6 base of the device.- The current passes through aspring-contact 1 1', binding-post 12,

and conductor 13 to the binding-post 14, connected with the other brushof the dynamo.

The binding posts 6 and 14 are connected by conductors 15 and 16 withthe igniter of the engine and by conductors 17 and 18 with the terminalsof the governorelectromagnet coils l9. Y

The governor device, which'is the distinguishing feature of the present-invention, comprises the electromagnets 19, preferably supported underthe base ofthe machine, and an armature 20, pivoted at one end adjacentto the binding-post 12 and secured to the contact-spring 11, the latterhaving an upwardlv-pro j ect-ing resilient arm 2 1, the upper end ofwhich is adapted to engage in notches thus providing a tensioning oradjusting device for said armature.

The frame 23 of the machine is pivotally secured at one of its cornersby a pivot-screw 24 to the base 25, and the other three corners of saidframe are formed withinclined too elongated slotsiZfiVthrdugh whichekten'd'se nrs ng rewsii t to the base adjacent to thka'piydt-screw- 24,Withits free endfl hearingagainst the adj acen't screw 27 Thisconstruction; serves to hold the friction-wheei 2 of the armature-shaftagainst the driving-wheel of the enginewith a yielding pressure.-

" hwlllibenoted that aportion-of the current generated asses to theengine igniterthrough the con uctors 15 and 16, while the remainder ofthe current is shuntedthrough jtheffieldeoils The circuit comprising theepnducto'rs. I? and: 1'8 connects-the brushes with the terminals of theelectromagnet- .Qoils 191 '4 When the speed of the armature issufficiently increased} to enerate a current greatenthan is required orignition purposes,' the excesscurrent fiows to the electromagnets.

19; energizing the "same and causing them to attract the pivoted'armature 20, thus withdrawing the spring-contact ll from thebinding-post 10 and breaking ,the zfield coil circuit at that point.This cuts out the fieldcoils, and consequently reduces the current tothe "desired degree to avoid burning out,

set

the igniter connections. 7

When the speed of the revolving armature is again reduced sufficientlyto supply less thanthe amount of'current required 'to en ergi-ze'theelectromagnets, .tlie pivoted arma-' ture 20 willdrop by gravity andreestablish a current throughthe-field-coils.

Iii {W111 'be chear that a-practicallyfconstant current. is maintained.in the igniter-circuit,

the variations ofi currentbeing automatically. controlled with relationto the speed of the revolving armature.

The electromagne't is sof wound that it may be tapped at differentpoints the separate leads representing Qcurrents of varying strength tovary the amount of current require tojeiiergize said frnagnet';

" What I claim, 'and desire' to secure by Letters Patent, i s c p "1 Inan BiGQtIlC-SPMKgGIiGIMZQi'; the e0rnhination with permanent magnets andfieldcoils; of an armaturelrevoluhly supported ,thegeneratonfieldj, acircuit from the "cornmutator-hrushes t0 theigriiter, a shuntv circuitfrom the brushes throughthe field coils an ele'ctric governor compr singan'electromagnet and an armature, and electric cone tAiiflat spring 28',preferal lyje c nsisting of a;plurality offlies or see mi s ftr ry ng.ngth, is secure seife'iiej ,neetions' hetweenf the ,terininaisof saidrnag net-coil and he fieldwofls wlifeby whehthe strength; of thecurrent; in. said. field-coils mature carrying a friction-disk, ofagovernor;

compris ng-an vele'c'trioniagnet v and; armature, and electricalconnections, whereby a "portion of the current generated passes'directlyto the igniter, While another portion is shunted through thefield-coils, and electricicen neotions' between said magnet and thebrushes,- and between said magnet; and the iiold-coilsiwherehy themagnet. will be ener-- gized when the currentin the field coi'ls isundulyincreas'ed, toattractits'armature and t out said fieldwoils.

3 an electriqsparkgenerator; the com binat on with a shu'ntwoimd--dynamo," co m; pris ng permanent ma nets, fieldooilsyand a revoluhlearmature .o an electric governor comprising an electron] agnet, and/enrm's-1 ture carrying'a' contact-spriri an d' eiectriq connectionsbetween the, bins ies 0f the-2dnanio, and the i'gniter, the brushes and't e .field coils, the field-coilsarid said s1ectr0-- magnet, and thebrushesand said eleetld 1nagnet,.-wheroby When'the Current ispundtly thefieldwoils willbe au't-oma'tieallyfcut out reduce the'current. 1'

prising permanent magnets fieldfeoils 4 and a reyoiuble armature, oianele otriezgoyernor comprising ah electromagnet; and-anemiatu recarryinga contact-spring, electrical scon nect'iens between the brushesof thedyrmmof and, the i niter, the} brushes and" the {i 1 coils, the,iield-coils and Saidfelct10magtiet,

increased 1; y the-speed of'the revoluhle armatu te f Inanelectric-spark generator; the eomhlnation with a shunt 't'vound dynamo,com-I and the brushes i-and' 'saidielectremagnet'f whereby whenthecjurrent: is; un'di y in:

creased by the speed ofthe;revoluble arma- 'ture,the field-coils'will heautomatically cut outto-reduce the. current; and-'anadjusjtingdeyice'io'r saidggiv'ernoi. v

In testimony whereof I aihx signature in the presenee ofitwowitnesses."

. JQSHUA' A; STRUTHERS.

ivitnesses:

"MAX H; snomm'z;

F. 0;.hiiCOLi1ARY.

